当前位置: X-MOL 学术J. Non-Cryst. Solids › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Hierarchical fivefold symmetry in CuZr metallic glasses
Journal of Non-Crystalline Solids ( IF 3.5 ) Pub Date : 2020-11-23 , DOI: 10.1016/j.jnoncrysol.2020.120548
Minhua Sun , Chunyu Han , Weiyu yang , Yingkun Lan

In this letter, we use molecular dynamics simulations to show that the CuZr metallic glasses have an intricate hierarchical fivefold symmetry that, either from the perspective of atom packing or icosahedral packing, the CuZr glasses follow the same fivefold packing symmetry in medium range. This fivefold symmetry extends up to surprisingly the eighth atomic shells, with the first five shells packed in Bergman- icosahedral scheme. These results show greater degree of order in glasses than presently envisaged and good agreement with experimental measurements which imply the intrinsic correlation between metallic glasses and quasicrystals as well.



中文翻译:

CuZr金属玻璃的五重对称

在这封信中,我们使用分子动力学模拟表明CuZr金属玻璃具有复杂的分层五重对称性,无论是从原子堆积还是二十面体堆积的角度来看,CuZr玻璃在中等范围内都遵循相同的五重堆积对称性。这种五重对称性令人惊讶地扩展到第八个原子壳,前五个壳以伯格曼二十面体方案包装。这些结果表明,玻璃比目前设想的有序度更高,并且与实验测量结果吻合得很好,这也暗示了金属玻璃和准晶体之间的内在联系。

更新日期:2020-11-23
down
wechat
bug